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brybart · 12-31-2018, 12:54 PM

2001 Boxster S with 99,000 miles. Earlier this year, on the way to a track day the CEL came on during stop and go traffic. Got home after track day, hooked up durametric, saw code P0133, cleared the code thinking I had a "lazy" O2 sensor when it got hot. CEL came on again later in the year, in the same conditions, engine warm, stop and go traffic, cleared code again. Went to get smog check in Dec 18 failed because pending P0133 code. So I installed all (4) new O2 sensors (Bosch), cleared the code, did two drive cycles, hooked up durametic and code P0133 shows with out the CEL lighting up. You can see the sensor cycling in Durametric. Other than O2 sensors what can cause this Code?

12-31-2018, 12:54 PM	#1
brybart Registered User Join Date: Nov 2016 Location: Bay Area, CA Posts: 36	P0133 Code Help! 2001 Boxster S with 99,000 miles. Earlier this year, on the way to a track day the CEL came on during stop and go traffic. Got home after track day, hooked up durametric, saw code P0133, cleared the code thinking I had a "lazy" O2 sensor when it got hot. CEL came on again later in the year, in the same conditions, engine warm, stop and go traffic, cleared code again. Went to get smog check in Dec 18 failed because pending P0133 code. So I installed all (4) new O2 sensors (Bosch), cleared the code, did two drive cycles, hooked up durametic and code P0133 shows with out the CEL lighting up. You can see the sensor cycling in Durametric. Other than O2 sensors what can cause this Code?